Question

(C) 6, 15
9. If 7 less than 5 times a number is equal to 8 more than twice the number. The number is
(d) 12,9
(a) 6
(b) 5
(c) 8
10. Sum of a number and its half is 45. The number is
(a) 30
(b) 15
(d) 40
(C) 22.​

Answer 1

Step-by-step explanation:

9.

Let the number be x

According to the Question,

5x-7=2x+8

5x-2x=7+8

3x=15

x=5

The number is 5.

10.

Its half is 45

So the number will be 45×2=90

So the number is 90

Hope it helps....

Answer 2

Answer:

Following are the reasons why the management of natural resources is important: To maintain a balance in the ecosystem. To avoid further destruction of the environment. To avoid over-consumption of the natural resources.

Step-by-step explanation:

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